forked from mirrors/gecko-dev
073241f091
This code seems to have been broken quite some time ago, but without adverse effect. I have filed bug 1691868 so that a proper fix can be found. In the meantime, this preserves the current behavior and is less confusing. Differential Revision: https://phabricator.services.mozilla.com/D104634
69 lines
2.1 KiB
C++
69 lines
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_widget_IconLoader_h_
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#define mozilla_widget_IconLoader_h_
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#include "imgINotificationObserver.h"
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#include "mozilla/RefPtr.h"
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#include "nsCOMPtr.h"
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#include "nsISupports.h"
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class nsIURI;
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class nsINode;
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class imgRequestProxy;
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class imgIContainer;
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namespace mozilla::widget {
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/**
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* IconLoader is a utility for loading icons from either the disk or over
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* the network, and then using them in native OS widgetry like the macOS
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* global menu bar or the Windows notification area.
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*/
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class IconLoader : public imgINotificationObserver {
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public:
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// This is the interface that our listeners need to implement so that they can
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// be notified when the icon is loaded.
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class Listener {
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public:
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virtual nsresult OnComplete(imgIContainer* aContainer) = 0;
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};
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// Create the loader.
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// aListener will be notified when the load is complete.
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// The loader does not keep an owning reference to the listener. Call Destroy
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// before the listener goes away.
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explicit IconLoader(Listener* aListener);
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_IMGINOTIFICATIONOBSERVER
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// LoadIcon will start a load request for the icon.
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// The request may not complete until after LoadIcon returns.
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// If aIsInternalIcon is true, the document and principal will not be
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// used when loading.
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nsresult LoadIcon(nsIURI* aIconURI, nsINode* aNode,
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bool aIsInternalIcon = false);
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void Destroy();
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protected:
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virtual ~IconLoader();
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private:
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RefPtr<imgRequestProxy> mIconRequest;
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// The listener, which is notified when loading completes.
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// Can be null, after a call to Destroy.
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// This is a non-owning reference and needs to be cleared with a call to
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// Destroy before the listener goes away.
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Listener* mListener;
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};
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} // namespace mozilla::widget
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#endif // mozilla_widget_IconLoader_h_
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